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CMarangon · 11-14-2020, 01:43 AM

Does HP 50 read PDF?

Is there any program able to open and to read it?

Massimo Gnerucci · 11-14-2020, 09:31 AM

Do you seriously want to render a PDF on a 131×80 pixels screen?

**rprosperi** · 11-14-2020, 01:09 PM

To be clear, that was a no.

But I think you knew that and asked a silly question just to make it to 50 posts... Wink

BINUBALL · (This post was last modified: 05-06-2021 01:18 PM by BINUBALL.)

Surprisingly, I think It can be done with Open Fire Image Viewer.
You have to convert pdf to individual image, and convert that image to 16-shade grayscale with open fire image converter.
Output will be extension gro4. You can view this with open fire

**rprosperi** · 05-06-2021, 02:24 PM

Still seems like a 'no' to me... Smile

3298 · 05-06-2021, 02:39 PM

... for two reasons:
- This doesn't appear very usable; obvious improvements would be downscaling the images and writing a new GROB viewer with gallery-style functionality for page flipping.
- You're technically not opening a PDF, you're opening screenshots of it. The hard part of PDF opening is rendering it, and the 50g still can't do that.

BobVA · (This post was last modified: 05-06-2021 02:47 PM by BobVA.)

I remember writing an image decoder for the HP-48 so I could get weather maps from Compuserve with a little pocket modem.

It was a super simple format - I think RLE, maybe. Not particularly practical, but it was a good way to learn RPL. :-)

BINUBALL · 05-07-2021, 09:01 AM

Yes, I didn't think about essence of pdf. This is not method viewing pdf. It was just viewing image.